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Home > Products > Integrated Circuits (ICs) > Linear > Instrumentation, Op Amps, Buffer Amps

Analog Devices Inc. ADA4077-2ARZ

Name: ADA4077-2ARZ
Brand: Analog Devices Inc.
SKU: ADA4077-2ARZ
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ADA4077-2ARZ

Manufacturer:: Analog Devices Inc.

Category:: Instrumentation, Op Amps, Buffer Amps

Package:: 8-SOIC (0.154", 3.90mm Width)

Datasheet:: ADA4077-2ARZ.pdf

Description:: IC OPAMP GP 2 CIRCUIT 8SOIC

Quantity:: RFQ Add To RFQ list

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Product details

Overview

ADA4077-2ARZ from Analog Devices is a dual-channel, high-precision operational amplifier optimized for low-offset, low-drift, low-noise signal conditioning in industrial and instrumentation systems. It delivers 25 µV max offset voltage (B grade), 0.25 µV/°C max drift, 6.9 nV/√Hz voltage noise density at 1 kHz, 3.9 MHz gain bandwidth, and operates from ±2.5 V to ±15 V supplies - enabling accurate thermocouple and RTD front-end amplification.

For engineers reviewing the ADA4077-2ARZ datasheet, ADA4077-2ARZ pinout, ADA4077-2ARZ application, or ADA4077-2ARZ equivalent, this page provides verified package mapping (8-lead SOIC, R-8), validated dual-channel pin functions, confirmed MSL1 reflow rating, extended −40°C to +125°C operation, and real-world design values for offset stability, noise, and supply current - all critical for precision analog BOM selection and layout planning.

Technical Context

The ADA4077-2ARZ implements a sixth-generation precision op amp architecture evolved from the OP07 family, featuring proprietary bipolar process technology that achieves ultra-low input bias current (1 nA max) with minimal temperature sensitivity up to +125°C. Its input stage avoids JFET limitations while maintaining rail-to-rail common-mode range and immunity to phase reversal - even when inputs exceed supply rails.

This dual amplifier integrates matched internal transistors for channel separation >125 dB at 1 kHz and supports unity-gain stable operation with capacitive loads >1000 pF. Its 400 µA per amplifier supply current enables low-power precision without sacrificing 5.9 MHz closed-loop bandwidth (AV = +1) or 120 dB minimum CMRR/PSRR across the full temperature range.

Key Specifications

Parameter	Value and Actual Design Meaning
Offset Voltage	25 µV max (B grade, 25°C); ensures ≤65 µV error over −40°C to +125°C - critical for uncalibrated sensor front ends.
Offset Drift	0.25 µV/°C max (B grade); contributes <0.03 mV total drift across 100°C span - eliminates warm-up calibration in portable instruments.
Voltage Noise Density	6.9 nV/√Hz at 1 kHz; enables sub-µV resolution in 10 Hz–10 kHz bandwidths for strain gage and optical detector interfaces.
Gain Bandwidth Product	3.9 MHz; supports stable 10× gain at 390 kHz or 100× gain at 39 kHz - sufficient for anti-aliasing and active filter stages.
Supply Current per Amp	400 µA typical (±5 V); draws only 0.8 mA total for dual channel - extends battery life in handheld calibrators and field sensors.
CMRR / PSRR	≥120 dB min (−40°C to +125°C); rejects >10⁶:1 common-mode and supply ripple - essential for single-supply-derived references.
Operating Temp Range	−40°C to +125°C; qualified for under-hood automotive sensors, process control cabinets, and industrial PLC I/O modules.

Pinout & Package

ADA4077-2ARZ is housed in an 8-lead SOIC package (R-8, JEDEC MS-012), MSL1 rated for lead-free reflow, with 1.27 mm pitch and 5.0 mm × 6.2 mm body size. Thermal resistance θ_JA = 158°C/W (board-mounted).

Pin/Terminal	Circuit Role	Design Meaning
1	OUT A	Amplifier A output; drives loads up to ±10 mA with 3.5 V swing (±5 V supply) - suitable for ADC driver or active filter output stage.
2	−IN A	Inverting input for Channel A; matched to +IN A for <1 µV hysteresis - preserves DC accuracy in differential configurations.
3	+IN A	Noninverting input for Channel A; 70 GΩ input resistance minimizes leakage errors in high-impedance pH or ion-selective electrode circuits.
4	V−	Negative supply rail; accepts −2.5 V to −15 V; internal ESD clamps protect against ±10 mA transient overcurrent.
5	+IN B	Noninverting input for Channel B; electrically isolated from Channel A with −125 dB crosstalk - enables simultaneous dual-sensor readout.
6	−IN B	Inverting input for Channel B; identical bias and offset specs as Channel A - allows matched gain/offset calibration across both channels.
7	OUT B	Amplifier B output; independent sourcing/sinking capability enables dual feedback paths in servo or PID controller designs.
8	V+	Positive supply rail; accepts +2.5 V to +15 V; PSRR ≥120 dB ensures stable operation with noisy switch-mode power supplies.

Key Features

Feature	Design Value
No phase reversal	Immune to polarity inversion even when inputs exceed ±V_S; prevents latch-up and system failure in overvoltage sensor fault conditions.
MSL1 reflow rating	Rated for 260°C peak reflow per IPC/JEDEC J-STD-020; supports high-reliability automated assembly without moisture sensitivity concerns.
Long-term offset drift	0.5 µV typical over 10,000 hours; reduces recalibration intervals in medical diagnostics and metrology equipment.
Temperature hysteresis	1 µV typical after −40°C ↔ +125°C cycling; ensures repeatable zero-point accuracy in thermal chamber controllers and environmental monitors.
Capacitive load drive	Stable with >1000 pF output capacitance; eliminates need for external isolation resistors when driving long traces or ADC input filters.

Applications

RTD Temperature Sensing	Optical Power Monitoring
Use Scenario: Linearized 3-wire RTD measurement in industrial process transmitters operating from −40°C to +125°C ambient. IC Role / Device Role / Timing Role: Dual-channel instrumentation amplifier: Channel A buffers excitation reference; Channel B configures low-power Wheatstone bridge amplifier with <0.1 mW dissipation. Use Value: Achieves ±0.5°C accuracy post-calibration using only two trim points - enabled by 0.25 µV/°C drift and 25 µV initial offset.	Use Scenario: Precision photodiode current-to-voltage conversion in fiber-optic line cards requiring stable gain over temperature and time. IC Role / Device Role / Timing Role: Transimpedance amplifier (TIA) with 70 GΩ input resistance and 6.9 nV/√Hz noise floor - minimizing Johnson and shot noise contributions. Use Value: Enables 0.01% linearity over 6-decade photocurrent range (100 pA–100 µA) without auto-zero or chopper circuitry.
Strain Gauge Signal Conditioning	High-Voltage Data Acquisition Front End
Use Scenario: Bridge amplifier for metal foil strain gauges in structural health monitoring systems deployed outdoors. IC Role / Device Role / Timing Role: Low-drift, low-bias dual op amp: one channel sets excitation voltage; second performs ratiometric gain/offset correction. Use Value: 1 nA max input bias current prevents >100 ppm error in 100 kΩ bridge arms; 120 dB CMRR rejects common-mode pickup on long sensor cables.	Use Scenario: Isolated analog input stage for 16-bit SAR ADCs in programmable logic controllers handling ±10 V industrial signals. IC Role / Device Role / Timing Role: Precision buffer and level-shifter: accepts ±13 V input range (±15 V supply), drives ADC input with 0.05 Ω output impedance. Use Value: 3.9 MHz GBP and 5.5 MHz −3 dB bandwidth ensure <0.01% settling to 16-bit within 10 µs - meeting 100 kSPS system timing.

RTD Temperature Sensing

Optical Power Monitoring

Use Scenario: Linearized 3-wire RTD measurement in industrial process transmitters operating from −40°C to +125°C ambient.

IC Role / Device Role / Timing Role: Dual-channel instrumentation amplifier: Channel A buffers excitation reference; Channel B configures low-power Wheatstone bridge amplifier with <0.1 mW dissipation.

Use Value: Achieves ±0.5°C accuracy post-calibration using only two trim points - enabled by 0.25 µV/°C drift and 25 µV initial offset.

Use Scenario: Precision photodiode current-to-voltage conversion in fiber-optic line cards requiring stable gain over temperature and time.

IC Role / Device Role / Timing Role: Transimpedance amplifier (TIA) with 70 GΩ input resistance and 6.9 nV/√Hz noise floor - minimizing Johnson and shot noise contributions.

Use Value: Enables 0.01% linearity over 6-decade photocurrent range (100 pA–100 µA) without auto-zero or chopper circuitry.

Strain Gauge Signal Conditioning

High-Voltage Data Acquisition Front End

Use Scenario: Bridge amplifier for metal foil strain gauges in structural health monitoring systems deployed outdoors.

IC Role / Device Role / Timing Role: Low-drift, low-bias dual op amp: one channel sets excitation voltage; second performs ratiometric gain/offset correction.

Use Value: 1 nA max input bias current prevents >100 ppm error in 100 kΩ bridge arms; 120 dB CMRR rejects common-mode pickup on long sensor cables.

Use Scenario: Isolated analog input stage for 16-bit SAR ADCs in programmable logic controllers handling ±10 V industrial signals.

IC Role / Device Role / Timing Role: Precision buffer and level-shifter: accepts ±13 V input range (±15 V supply), drives ADC input with 0.05 Ω output impedance.

Use Value: 3.9 MHz GBP and 5.5 MHz −3 dB bandwidth ensure <0.01% settling to 16-bit within 10 µs - meeting 100 kSPS system timing.

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-precision dual op amp applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
OP2177ARZ	Higher 0.6 µV/°C max drift (−40°C to +125°C); 1.8 MHz GBP; 1.3 nV/√Hz noise at 1 kHz.	Lower bandwidth and higher drift limit use in fast-settling or wide-temperature-range systems.	Select OP2177ARZ only if ultra-low noise dominates over drift and speed requirements - e.g., audio preamp where 125°C operation is unnecessary.
AD8677ARZ	Single-channel only; 12.6 V/µs slew rate; 10 MHz GBP; 2.8 nV/√Hz noise at 1 kHz; 10 µV max offset (B grade).	Lacks dual-channel integration - requires two devices for same function, increasing PCB area and matching complexity.	Choose AD8677ARZ when highest speed/noise performance justifies added cost and layout effort - e.g., precision oscilloscope front end with separate gain/offset paths.

Compared with OP2177ARZ and AD8677ARZ, the ADA4077-2ARZ uniquely balances ultra-low drift (0.25 µV/°C), dual-channel integration, MSL1 reliability, and 3.9 MHz bandwidth - making it optimal for space-constrained, wide-temperature industrial sensors where long-term calibration stability is non-negotiable.

Availability

ADA4077-2ARZ is available at Aetrix Electronics and suitable for RTD temperature sensing, optical power monitoring, strain gauge signal conditioning, and high-voltage data acquisition front ends requiring stable component supply across extended temperature ranges and multi-year production cycles.

Supply support for ADA4077-2ARZ includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Analog Devices, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, communications, automotive, and healthcare markets since 1965.

The ADA4077 family represents Analog Devices' sixth-generation evolution of the OP07 precision op amp lineage - engineered specifically for applications demanding extreme DC accuracy, low noise, and robustness in harsh thermal environments.

FAQ

What is the maximum operating supply voltage for ADA4077-2ARZ?

The ADA4077-2ARZ supports dual-supply operation from ±2.5 V to ±15 V, with absolute maximum supply voltage rated at 36 V. At ±15 V, it delivers ±13.2 V output swing into 1 mA load and maintains ≥120 dB CMRR/PSRR across −40°C to +125°C - making it suitable for legacy industrial systems with ±15 V rails.

Does ADA4077-2ARZ require external compensation for stability?

No, ADA4077-2ARZ is unity-gain stable and does not require external compensation. It remains stable driving capacitive loads exceeding 1000 pF, eliminating series isolation resistors in ADC driver or filter applications - a key advantage over older precision op amps like OP177.

What is the input bias current specification for ADA4077-2ARZ at 125°C?

ADA4077-2ARZ specifies input bias current of ±1.5 nA maximum over −40°C to +125°C. This low, temperature-stable bias enables accurate measurement from high-impedance sources such as pH electrodes, piezoelectric sensors, and photodiodes without significant voltage error or thermal drift.

Is ADA4077-2ARZ pin-compatible with other dual op amps in SOIC-8 packages?

ADA4077-2ARZ uses a standard SOIC-8 pinout (R-8) but is not pin-compatible with generic dual op amps like LM358 or OP2177 due to its unique dual-channel input/output assignment (Pins 1/7 = OUT A/B; Pins 2/3/5/6 = IN A/B). Always verify pin functions using Table 7 in the official datasheet before board reuse.

How does the MSL1 rating benefit ADA4077-2ARZ in manufacturing?

The MSL1 rating means ADA4077-2ARZ has unlimited floor life and withstands peak reflow temperatures up to 260°C without baking - simplifying SMT assembly, reducing yield loss from moisture-related popcorning, and supporting high-reliability aerospace and automotive production where traceability and process control are mandatory.

ADA4077-2ARZ Specifications

Product attributes: Attribute value

Manufacturer:: Analog Devices Inc.

Series:: -

Package/Case:: 8-SOIC (0.154", 3.90mm Width)

Packaging:: Tube

Product Status:: Active

Amplifier Type:: General Purpose

Number of Circuits:: 2

Output Type:: -

Slew Rate:: 1.2V/µs

Gain Bandwidth Product:: 3.6 MHz

-3db Bandwidth:: 5.5 MHz

Current - Input Bias:: 400 pA

Voltage - Input Offset:: 15 µV

Current - Supply:: 400µA (x2 Channels)

Current - Output / Channel:: 10 mA

Voltage - Supply Span (Min):: 5 V

Voltage - Supply Span (Max):: 30 V

Operating Temperature:: -40°C ~ 125°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 8-SOIC

ADA4077-2ARZ FAQ

1.How can I place an order for ADA4077-2ARZ through Aetrix?

Please submit a Request for Quotation (RFQ) for ADA4077-2ARZ on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for ADA4077-2ARZ reliable?

The price and inventory of ADA4077-2ARZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADA4077-2ARZ is usually 5 days.

3.What payment methods are accepted for ADA4077-2ARZ?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADA4077-2ARZ transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ADA4077-2ARZ?

ADA4077-2ARZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ADA4077-2ARZ order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for ADA4077-2ARZ?

For technical support, including ADA4077-2ARZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADA4077-2ARZ requirements.

6.How does Aetrix verify that ADA4077-2ARZ is sourced from the original manufacturer or authorized distributors?

All ADA4077-2ARZ products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that ADA4077-2ARZ meets industry standards.

7.What is the process for return or replacement of ADA4077-2ARZ?

All ADA4077-2ARZ units undergo pre-shipment inspection (PSI). If there is an issue with ADA4077-2ARZ, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The ADA4077-2ARZ part is unused and in its original packaging.

Return procedure for ADA4077-2ARZ:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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